【单选题】-Why were you shouting at Tom? -I told him to be quiet, but he __ talking.
【判断题】用IUPAC系统命名法命名化合物 是苯酚;
【简答题】(题干)X线摄影中,对被检者体位的描述均以解剖学姿势为准。关于解剖学方位,以下错误的是A.仰卧时,腹侧为上 B.近正中矢状面为内侧 C.近身体腹面为腹侧 D.远心脏端为远端 E.近足侧为下 与解剖学水平面平行的定位线是A.听眉线 B.听眦线 C.听眶线 D.听口线 E.听鼻线 将人体纵切为左右两部分的切面为A.水平面 B.横切面 C.冠状面 D.额状面 E.矢状面 外耳孔与鼻前棘的连线称为A.听眦...
【单选题】下列关于SPECT门控采集的描述,错误的一项是
A.
门控采集多用于脏器功能评价和腔内异常结构的诊断
B.
门控采集是连续采集多帧图像,要求图像不能有位移,必要时可以用正弦图方式来判定
C.
示踪剂的标记率要高,大于90%,从血液循环中清除要慢,标记性能稳定
D.
门控采集强调功能判断与时间分辨,矩阵选取64×64
E.
每周期或R-R间期采集帧数16~32,偶数为宜,采集总心动周期数:30~50
【单选题】----- Tom, why were you _____ from school yesterday?
A.
I got a bad cold and my mother took me to the doctor’s.
【单选题】— Tom, why were you _____ from school yesterday? why were you _____ from school yesterday? — I got a bad cold and my mother took me to the doctor's.